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我们在设计、加工和安装中,经常遇到公差配合的问题,要解决这些问题,就要掌握公差配合表中一系列规定,去查阅计算公式,并逐一计算。例如:在静配合中就有以下三个公式: 过盈最大=轴最大-孔最小 (1) 或过盈最大=轴的上偏差-孔的下偏差 (1)’过盈最小=轴最小-孔最大 (2) 或过盈最小=轴的下偏差-孔的上偏差 (2)’过盈公差=过盈最大-过盈最小 (3) 或过盈公差=轴公差+孔公差 (3)’同理,在过渡配合及动配合中,也各有三个公式,即共有九个公式,需要熟练掌握,特别是过渡配合的计算,有时往往出差错。
We often encounter in the design, processing and installation of tolerance with the problem, to solve these problems, it is necessary to master a list of tolerances with a series of rules, to access the calculation formula, and calculate one by one. For example, there are three formulas in static fit: Max. Interference = Max. Shaft - Min. Hole (1) or Max. Interference = Upper deviation of the shaft - Lower deviation of the hole (1) (2) or interference minimum = lower shaft deviation - upper deviation hole (2) ’Tight tolerance = maximum interference - minimum interference (3) or tolerance tolerance = shaft tolerance + hole tolerance (3) Similarly, there are also three formulas in transitional coordination and coordination. That is, there are nine formulas in common, which need to be mastered, especially in transitional coordination. Sometimes mistakes are often made.